$184+ Cheap flights from Seattle (SEA) to Brussels
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Jul 13 — Jul 201
Round-trip
1 adult, Economy
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Cheapest flights from Seattle to BrusselsExplore the most affordable flight options available from Seattle to Brussels. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 13, 2026.
Explore the most affordable flight options available from Seattle to Brussels. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 13, 2026.
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/183:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/2912:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 6/9![Icelandair logo]()
$513
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 10/151:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 6/9![Icelandair logo]()
$514
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/33:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Thu 10/151:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 6/9![Icelandair logo]()
$519
This oojo deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Sun 10/181:50 pm
BRU
- SEA
1 stop15h 50m
Icelandair
Deal found 6/10![Icelandair logo]()
$522
This Gotogate deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Tue 8/251:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 6/13![Icelandair logo]()
$524
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Wed 9/91:50 pm
BRU
- SEA
1 stop13h 05m
Icelandair
Deal found 6/9![Icelandair logo]()
$526
This FlightHub deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Thu 10/2912:50 pm
BRU
- SEA
1 stop13h 10m
Icelandair
Deal found 6/12![Icelandair logo]()
$528
This oojo deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/311:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Wed 8/191:50 pm
BRU
- SEA
1 stop30h 55m
Icelandair
Deal found 6/10![Icelandair logo]()
$531
This Mytrip deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:00 am
SEA
- CRL
2 stops28h 15m
Multiple Airlines
Tue 8/259:00 pm
CRL
- SEA
2 stops23h 55m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$552
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/47:10 pm
SEA
- CRL
1 stop17h 15m
Multiple Airlines
Mon 10/1910:00 pm
CRL
- SEA
2 stops29h 45m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$904
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/167:10 pm
SEA
- CRL
1 stop17h 05m
Multiple Airlines
Sun 8/309:05 am
CRL
- SEA
2 stops39h 55m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$932
This Mytrip deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/33:40 pm
SEA
- CRL
2 stops20h 50m
Multiple Airlines
Sun 9/139:05 am
CRL
- SEA
2 stops17h 50m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$957
Best flights from Seattle to BrusselsDiscover carefully curated flight deals from Seattle to Brussels that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 13, 2026.
Discover carefully curated flight deals from Seattle to Brussels that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 13, 2026.
This United deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/411:50 pm
SEA
- BRU
1 stop24h 05m
Multiple Airlines
Sun 11/1510:00 am
BRU
- SEA
2 stops37h 37m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$720
This Scandinavian Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/23:55 pm
SEA
- BRU
1 stop32h 45m
Scandinavian Airlines
Tue 10/610:20 am
BRU
- SEA
1 stop12h 25m
Scandinavian Airlines
Deal found 6/9![Scandinavian Airlines logo]()
$725
This United Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1011:00 am
SEA
- BRU
2 stops17h 10m
United Airlines
Sun 12/2011:55 am
BRU
- SEA
2 stops31h 04m
United Airlines
Deal found 6/13![United Airlines logo]()
$751
This Air Canada deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:40 am
SEA
- BRU
2 stops16h 30m
Air Canada
Tue 10/69:10 am
BRU
- SEA
2 stops22h 32m
Air Canada
Deal found 6/12![Air Canada logo]()
$839
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2611:59 pm
SEA
- BRU
1 stop22h 41m
Delta
Tue 8/118:05 am
BRU
- SEA
1 stop12h 32m
Delta
Deal found 6/10![Delta logo]()
$860
This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:50 pm
SEA
- BRU
1 stop12h 25m
United Airlines
Sat 10/3112:45 pm
BRU
- SEA
1 stop33h 15m
United Airlines
Deal found 6/12![United Airlines logo]()
$775
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/193:00 pm
SEA
- BRU
2 stops20h 00m
United Airlines
Fri 10/239:10 am
BRU
- SEA
2 stops39h 41m
United Airlines
Deal found 6/8![United Airlines logo]()
$778
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/36:05 am
SEA
- BRU
2 stops23h 35m
Delta
Tue 8/189:45 am
BRU
- SEA
1 stop19h 38m
Delta
Deal found 6/10![Delta logo]()
$864
This Mytrip deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/33:40 pm
SEA
- CRL
2 stops20h 50m
Multiple Airlines
Sun 9/139:05 am
CRL
- SEA
2 stops17h 50m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$957
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/319:45 pm
SEA
- BRU
1 stop24h 55m
Delta
Wed 8/126:20 am
BRU
- SEA
2 stops19h 40m
Delta
Deal found 6/11![Delta logo]()
$877
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:00 am
SEA
- BRU
2 stops23h 15m
United Airlines
Tue 10/69:10 am
BRU
- SEA
2 stops35h 17m
United Airlines
Deal found 6/9![United Airlines logo]()
$824
This Mytrip deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/263:40 pm
SEA
- CRL
3 stops20h 35m
Multiple Airlines
Tue 8/119:05 am
CRL
- SEA
2 stops17h 05m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$979
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/37:10 pm
SEA
- CRL
1 stop28h 15m
Multiple Airlines
Tue 8/186:40 am
CRL
- SEA
2 stops21h 05m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$992
This Mytrip deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/32:35 pm
SEA
- CRL
2 stops23h 10m
Multiple Airlines
Wed 11/117:55 am
CRL
- SEA
2 stops18h 05m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$1,032
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/27:10 pm
SEA
- CRL
1 stop17h 05m
Multiple Airlines
Tue 8/116:40 am
CRL
- SEA
2 stops21h 05m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$1,097
This Mytrip deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1411:00 am
SEA
- CRL
3 stops26h 35m
Multiple Airlines
Fri 8/289:50 am
CRL
- SEA
2 stops17h 55m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$1,113
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/27:10 pm
SEA
- CRL
1 stop17h 05m
Multiple Airlines
Fri 8/78:45 am
CRL
- SEA
2 stops17h 25m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$1,120
This Mytrip deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/32:10 pm
SEA
- CRL
2 stops20h 45m
Multiple Airlines
Sat 8/224:20 pm
CRL
- SEA
3 stops37h 40m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$1,137
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:10 pm
SEA
- CRL
1 stop28h 30m
Multiple Airlines
Wed 7/157:05 pm
CRL
- SEA
2 stops31h 15m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$1,137
Last-minute flights from Seattle to BrusselsDiscover last-minute flight deals from Seattle to Brussels. Data last updated June 13, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Brussels. Data last updated June 13, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:55 pm
SEA
- BRU
1 stop16h 45m
Aer Lingus
Tue 7/1410:20 am
BRU
- SEA
1 stop15h 50m
Aer Lingus
Deal found 6/12![Aer Lingus logo]()
$820
This Booking.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/126:55 pm
SEA
- BRU
1 stop16h 45m
Aer Lingus
Sat 7/2510:20 am
BRU
- SEA
1 stop15h 50m
Aer Lingus
Deal found 6/10![Aer Lingus logo]()
$873
This Gotogate deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/267:20 pm
SEA
- BRU
2 stops26h 50m
Air Canada
Tue 8/119:30 am
BRU
- SEA
2 stops33h 37m
Air Canada
Deal found 6/10![Air Canada logo]()
$842
This Gotogate deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/267:20 pm
SEA
- BRU
2 stops26h 50m
Multiple Airlines
Tue 8/1112:45 pm
BRU
- SEA
1 stop13h 14m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$857
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2611:59 pm
SEA
- BRU
1 stop22h 41m
Delta
Tue 8/118:05 am
BRU
- SEA
1 stop12h 32m
Delta
Deal found 6/10![Delta logo]()
$860
This Trip.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/278:00 am
SEA
- BRU
1 stop14h 50m
Multiple Airlines
Mon 8/32:25 pm
BRU
- SEA
1 stop30h 30m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$871
This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/278:56 am
SEA
- BRU
2 stops19h 19m
United Airlines
Mon 8/32:25 pm
BRU
- SEA
1 stop30h 30m
United Airlines
Deal found 6/12![United Airlines logo]()
$879
This Air Canada deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/317:20 pm
SEA
- BRU
2 stops50h 50m
Air Canada
Thu 8/139:30 am
BRU
- SEA
2 stops33h 37m
Air Canada
Deal found 6/11![Air Canada logo]()
$854
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/319:45 pm
SEA
- BRU
1 stop24h 55m
Delta
Thu 8/1310:25 am
BRU
- SEA
1 stop34h 12m
Delta
Deal found 6/11![Delta logo]()
$866
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/319:45 pm
SEA
- BRU
1 stop24h 55m
Delta
Wed 8/126:20 am
BRU
- SEA
2 stops19h 40m
Delta
Deal found 6/11![Delta logo]()
$877
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/315:40 pm
SEA
- BRU
1 stop28h 55m
Delta
Fri 8/710:25 am
BRU
- SEA
2 stops22h 29m
Delta
Deal found 6/11![Delta logo]()
$881
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/312:10 pm
SEA
- BRU
1 stop12h 40m
United Airlines
Fri 8/710:15 am
BRU
- SEA
1 stop14h 54m
United Airlines
Deal found 6/11![United Airlines logo]()
$883
One-way flights from Seattle to BrusselsSearch for one-way flight options from Seattle to Brussels. Find affordable one-way fares based on user searches. Data last updated June 13, 2026.
Search for one-way flight options from Seattle to Brussels. Find affordable one-way fares based on user searches. Data last updated June 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:35 pm
SEA
- CRL
3 stops42h 55m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$184
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:35 pm
SEA
- BRU
2 stops16h 55m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:35 pm
SEA
- BRU
2 stops31h 05m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:35 pm
SEA
- CRL
3 stops29h 40m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$214
This Mytrip deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/33:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 6/8![Icelandair logo]()
$215
This Mytrip deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/411:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 6/8![Icelandair logo]()
$217
This Mytrip deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/611:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 6/9![Icelandair logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:35 pm
SEA
- BRU
3 stops30h 40m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$229
This Mytrip deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/811:25 pm
SEA
- BRU
1 stop28h 30m
Icelandair
Deal found 6/8![Icelandair logo]()
$231
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/33:40 pm
SEA
- BRU
1 stop12h 15m
Icelandair
Deal found 6/9![Icelandair logo]()
$236
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:00 pm
SEA
- BRU
1 stop32h 55m
Icelandair
Deal found 6/9![Icelandair logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:35 pm
SEA
- CRL
3 stops28h 20m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$264
Find flight deals from Seattle to Brussels
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Brussels (BR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 13, 2026.
Round-trip from | $513 (oojo) |
|---|---|
One-way from | $184 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $1,138 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Brussels that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 13, 2026.
Use the filters below to find and compare flights from Seattle to Brussels that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 11/4
11:50 pm-8:55 am
1 stop24h 05m
Brussels Bruxelles-National
Sun 11/15
10:00 am-2:37 pm
2 stops37h 37m
$720
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Fri 10/2
3:55 pm-9:40 am
1 stop32h 45m
Brussels Bruxelles-National
Tue 10/6
10:20 am-1:45 pm
1 stop12h 25m
$725
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Thu 12/10
11:00 am-1:10 pm
2 stops17h 10m
Brussels Bruxelles-National
Sun 12/20
11:55 am-9:59 am
2 stops31h 04m
$751
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Wed 10/14
6:50 pm-4:15 pm
1 stop12h 25m
Brussels Bruxelles-National
Sat 10/31
12:45 pm-2:00 pm
1 stop33h 15m
$775
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 10/19
3:00 pm-8:00 pm
2 stops20h 00m
Brussels Bruxelles-National
Fri 10/23
9:10 am-3:51 pm
2 stops39h 41m
$778
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Fri 10/2
5:00 am-1:15 pm
2 stops23h 15m
Brussels Bruxelles-National
Tue 10/6
9:10 am-11:27 am
2 stops35h 17m
$824
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Fri 10/2
5:40 am-7:10 am
2 stops16h 30m
Brussels Bruxelles-National
Tue 10/6
9:10 am-10:42 pm
2 stops22h 32m
$839
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Sun 7/26
11:59 pm-7:40 am
1 stop22h 41m
Brussels Bruxelles-National
Tue 8/11
8:05 am-11:37 am
1 stop12h 32m
$860
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Mon 8/3
6:05 am-2:40 pm
2 stops23h 35m
Brussels Bruxelles-National
Tue 8/18
9:45 am-8:23 pm
1 stop19h 38m
$864
SeattleBrussels
SEA - BRU
SEABRU
Seattle/Tacoma Intl
Fri 7/31
9:45 pm-7:40 am
1 stop24h 55m
Brussels Bruxelles-National
Wed 8/12
6:20 am-5:00 pm
2 stops19h 40m
$877
Showing 1-10 of 38 resultsSorted by cheapest first
Best time to book a flight from Seattle to Brussels
Have a flexible travel schedule? Discover the best time to fly to Brussels from Seattle with our price prediction graph.
SEA-BR1
SEA-BRU
SEA-CRL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Brussels
SEA-BR1
SEA-BRU
SEA-CRL
What is the cheapest month to book a flight from Seattle to Brussels?
Currently, January is the cheapest month in which you can book a flight from Seattle to Brussels (average of $375). Flying from Seattle to Brussels in June is currently the most expensive (average of $693). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Seattle to Brussels?
How far ahead should I book a flight from Seattle to Brussels?
The price you pay for your flight from Seattle to Brussels may vary depending on when you book. For the best chance of a lower fare, look to book 75 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Reviews of airlines servicing Brussels
Get insights into the airlines that provide service to Brussels. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Brussels. Reviews last updated June 13, 2026.
Get a feel of what it's like to fly with Delta,KLM, andUnited Airlines from Seattle to Brussels by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.9
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Seattle to Brussels. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Popular flights
Alternative routes for Seattle to Brussels
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Complete your trip
Complete your trip to Brussels by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Brussels by cabin class
Find flights from Seattle to Brussels, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Brussels flights
Browse other Seattle and Brussels flight options. Last updated on June 13, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on June 13, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from Seattle to Brussels
Discover the top 6 airlines that operate flights from Seattle to Brussels. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$383 | Average$496 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$621 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$470 | Average$741 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$481 | Average$713 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$482 | Average$642 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$494 | Average$663 | FlexibilityNo cancel fee | On-time76% |